Re: New block mode of operation

[Ed Switalski <E.Switalski@bnr.co.uk>]

RE: 

   >Cipher-Chain-Cipher Mode of Operation
   >for Improving the Security of Block Ciphers
   >
   >by Thomas C. Jones
   >
   >

Sorry!

but  Ross Anderson <Ross.Anderson@cl.cam.ac.uk>

writes :  
 
  >This doesn't stop differential cryptanalysis. In fact, Biham has developed a
  >whole theory on modes of operation which will come out at Crypto 94. The nub
  >of the theory is that fancy chaining modes don't buy you anything; you're
  >better to use your algorithm n times to replace DES in standard CBC or CFB.


I have an Adobe.ps file of Bihams paper from Ross


			Regards,
                                               __o        __o
                           Ed                  \<,        \<,
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